====== SPINAL CORE LINKAGES  ======


  * Spinal core 
    * segments joining to form [[:en:nerve_plexus | NERVE PLEXUS ]] 
      * [[:en:cervical_plexus|cervical plexus ]]
      * [[:en:brachial-plexus|brachial plexus ]]
      * [[:en:lumbosacral-plexus|lumbosacral plexus]] 
    * each row has spinal nerves which are either 
      * called afferent nerve collects information from 
        * skin and sensory receptors , proprioceptors 
      * called efferent nerve sends information to
        * muscles
      * called mixed nerve  
      * called autonomic nerve 
        * sympathetic
        * parasympathetic
          * glands , smooth muscle 
      * reflex arc